Benjamin stalcup



(No Model.)

B. STALGUP.

SHARPENER FOR GOLTERS-AND HARROW DISKS. No. 349,667. Patented Spt. 21, 1886.

' being held between the jaws of a vise, as in- UNITED STATES Y PATENT "OFFICE.

BENJAMIN STALGUP, OF IVORTHINGTON, INDIANA, ASSIGNOR OF ONEHALF TO MARIA L. BARRACKMAN, OF SAME PLACE.

SHARPENER FOR COLTERS AND HARROW-DISKS.

SPECIFICATION forming part of Letters Patent No. 349,667, dated September 21, 1886.

Application filetLJanuar;- :6, 1886.

To all whom it play concern:

Be it known that I, BENJAMIN STALOUP, a citizen of the United States, residing at W'orth ington, in the county of Greene and State of Indiana, have invented certain new and useful Improvements in Devices for Sharpening XVheel-Colters for Flows and Plow and Harrow Disks, of which the following is a specification.

My invention relates to a novel device for sharpening wheelcolters for plows and disks for plows and harrows.

The object of my invention is to provide a device which will be simple, cheap, and easily handled by unskilled persons, to be supported directly upon or in the hub of the colter when the device is in use, and which may be adj usted readily to suit the size of the colter and vary the angle of its cutting-edge to suit the nature of the soil to be worked in plowing.

The improvement consists generally in a standard pivotaliy supported in or upon the hub of the colter, in combination with a file holder or stock adjustably and pivotally connected to said standard, and a file or rasp adj ustabl y supported upon the stock and adapted to be moved across the face and adjusted to the sides of the cutting-edge of the colter and to equally and truly follow the edge in its complete circuit.

In the accompanying drawings, Figurel is a perspective of a colter and tool-holder placed in position thereon ready for work, the colter dicated by dotted lines; Fig. 2, a plan of a fragmental part of the stock or file-holder with the pivotal connection to the standard or spindle shown in section; Fig. 3, an elevation of the spindle and stock of the file-holder with a portion of the file and stockbroken away; Fig. 4, a perspective of a modified construction of stock or file holder with a fragmental portion of a file secured to the stock, as will hereinafter appear.

The device herein described may be made in several forms, the same or equivalent elements being used in each of the forms to constitute my invention, two of which forms are shown, by way of illustration, with like letters of reference employed to indicate like parts in all the figures.

Serial No. 189,816. (No model.)

The preferred form of device is shown in Figs. 1, 2, and 3, wherein a spindle, A, is of a diameter corresponding with the inside diameter of the hub of the colter H, to freely turn therein, and is provided. with a slotted standard or extended end, A, which projects axially from said spindle coincident with the axis of the colter when placed thereon. One end of a pivot-spool, B, is flattened, fitted loosely to, and made adjustable in the slot to of the standard A, and is held therein after adjustment by a bolt, 0, and nut G. A shoulder, 1), on the spool and a washer, G placed upon the bolt beneath the nut permits the parts to be clamped more securely together. The spool B is provided with a reduced portion or journal, I), which forms a bearing for the lug d of a metal stock-plate, D, and provides means for freely hinging said stock-plate upon the standard A. The bolt 0 passes axially through the spoolB, and the head (I of the bolt is screwed up tightly against the end of the journal b, which also serves as an abutment to keep the lug d of the stock-plate from being clamped or pressed against the end of the spool, and prevented thereby from turning freely thereon. A clamp-loop, E, fits around and may be adjusted upon the stock-plate'D, andahand-file, F,of well-known form, is firmly 8o clamped between the loop and stock-plate by means of a set-screw E, fitted into said, loop to impinge against the file and hold itin place on the stoclcplate.

In the modification shown in Fig. 4 a spin- 8 5 dle, A, provided with a pillow-block, A, is employed instead of the standard A, and the said pillow-block A is bored through to re ceive the spindle b of a spool, B. The spool 13 (shown in Fig. 4 and employed as a modifio cation of the spool previously described) is solid, and is turned down to provide a short spindle, b"',whieh passes snugly through a slot,

d, formed in a lug or plate, d, which projects from the face of the stock-plate D. A screw- 5 thread formed on the turned-down end of the spindle b, and a washer, O", and nut O is fitted onto the threaded end I) of the spool to hold the stock-plate D securely upon the spool in its adjusted position. The spindle is grooved circumferentially to receive the end of a thumb-screw,G, fitted into the upper end of the pillow-block A, whieh holds the spindle securely in place within the bearing. of the pillow-block, but permits it to turn freely therein. It will thus be seen that the only material difference between the two forms of construction heretofore described is that in one case the standard is slotted, and in the other case the lug of the stock-plate is slotted to admit of adjustment one upon the other.

In operation the stock-plate is first adjusted upon the standard to operate at any required angle across the face of the colterdisk, and conform to the angle or bevel required for the cutting-edge. The file will be thus sustained at all times across the face of the blade at a given angle therewith and arranged to maintain a constant relation to the periphcry of the colter, the relation being similar to that of a chord to a circle. By adjusting the pivotal support of the stock-plate nearer to or farther away from the face of the colter the angle of the file to said face, and consequently the angle of the cutting-edge of the colter, will be correspondingly decreased or increased. The colter is firmly clamped between the jaws of a vise, or otherwise held, as desired or preferred, and the file-handle grasped with one hand and swung across the face and cuttingedge of the colter, the standard A turning freely on its pivotal connection with the colter to permit said movement of the file. The cutting-lines of the file-bladc will be held at the proper angle to the work bymeans of the stock, and the pivotal connection of the stock-plate to the standard will permit the file being raised from the colter, and also permit of pressure being effectively-applied to the file asre quired, and the file will be allowed to swing free] y to dress off the edge of the blade. By changing the pivotal relation of the stock to the spindle, as heretofore described, the angle at which the file is held to the face of the blade may be varied to suit the bevel or angle required for the cutting-edge of the colter without varying the relative position or chordal relation of the file to the periphery of the blade. WVhen one side of the colter is dressed off to the required amount, the spindle of the fileholder may be withdrawn from one side of the colter and replaced in the other side, and the opposite face of the colter may be similarly dressed. As the file is worn away it may be shifted longitudinally, or reversed and clamped in any required position upon the stock-plate to utilize the entire length ofthe file, and old files worn midway of their length only, previously used upon general work, may be used for sharpening the colter by means of my improved device, as they may be clamped upon the stock-plate to bring their unworn ends only to bear upon the work.

Various other modifications than that herein described may be made in the means for pivotally connecting the stock to the spindle as will suggest themselves to anyone skilled in the art without departing from my invention, one only of said modifications being deemed sulfieient to indicate the scope of my claims.

Instead of a file, a scraper or other cutting tool may be used.

lVhat I claim as new, and desire to secure by Letters Patent, is-

1. In combination, a standard pivotally secured to the colter, a stock-plate pivotally secured to said standard, and a file adjustably secured to said stock-plate, substantially as described, and for the purpose specified.

2. In combination, a standard pivotally se cured to the colter, a stock-plate pivotally and adjustabl y secured to said standard, and a file elampedto said stoclcplate, substantially as and for the purpose specified.

In COll1blllLllOll,{L pivotal standard and a stoelcplate, said stock-plate carrying a file-attaching clamp, and hinged to a pivot whichis vertically adjustable on said pivotal standard, substantially as and for the purpose specified.

4. In combination, a standard, A, having a spindle, A, and slot a, spool B, adjustably secured to said standard, stock-plate D, pivoted to said spool, clamp E, and file F, substantially as and for the purpose specified.

In testimony whereof I affix my signature in I presence of two witnesses.

BENJAMIN STALCUP. lVitnesses:

JAMES C. FULK, ALVAH H. DILL. 

